fuel system

[pjoy47]

Trying to put a 2000 interstate back together that I bought from salvage. Down to trying to start it and I can't find any detail on the micro fisch or in my service manual about the 3 way fuel joint and where it connects. Fuel is moving but dumping all over from the stay right behind the petcock (towards the seat). Looks like I'm missing something, but can't see anything in the books that should go there. Any ideas? No one close by that I can take a look at to physically see what I'm having trouble with.

[Brian]

Welcome aboard.

There are two 3-way fuel joints and one tee that make up the fuel supply from the petcock. A 3-way joint is located between two carbs on each side. I strongly suggest you download the shop manual that is posted here from dag and purchase one if possible. I use the Clymer and the Honda manuals. The wiring diagrams in the Clymer book are in color. Once you get it running you may want to check the entire driveline splines

This site offers a search box where you can ask all kinds of subjects. The search will the find phrases or words that match your subject question and then show you threads that you can open. The majority of the members here post pictures of their projects and their issues.

I should have pictures on what you are looking for but not downloaded so that one can be posted here. I plan to look.

Good luck.
Hopefully someone will jump in here with a post that will help you.

[Brian]

Welcome aboard.

There are two 3-way fuel joints and one tee that make up the fuel supply from the petcock. A 3-way joint is located between two carbs on each side. I strongly suggest you download the shop manual that is posted here from dag and purchase one if possible. I use the Clymer and the Honda manuals. The wiring diagrams in the Clymer book are in color. Once you get it running you may want to check the entire driveline splines

This site offers a search box where you can ask all kinds of subjects. The search will the find phrases or words that match your subject question and then show you threads that you can open. The majority of the members here post pictures of their projects and their issues.

I should have pictures on what you are looking for but not downloaded so that one can be posted here. I plan to look.

Good luck.
Hopefully someone will jump in here with a post that will help you.

Here is a picture of the carb set removed. The two gray colored tubes are the fuel lines to the carb fuel rails. The tubes connected to the tees above the fuel 3-way joints are for the bowl vents.

[Chrisj CMA]

Trying to put a 2000 interstate back together that I bought from salvage. Down to trying to start it and I can't find any detail on the micro fisch or in my service manual about the 3 way fuel joint and where it connects. Fuel is moving but dumping all over from the stay right behind the petcock (towards the seat). Looks like I'm missing something, but can't see anything in the books that should go there. Any ideas? No one close by that I can take a look at to physically see what I'm having trouble with.

Sounds like fuel is dumping out the tank vent.  That vent line behind the petcock (toward the seat) as you say has a 3 way link in the middle of it but the hrizontal nipple is left open as a syphon break.

Now why its pouring out the vent could be as simple as it being over filled

[Brian]

Trying to put a 2000 interstate back together that I bought from salvage. Down to trying to start it and I can't find any detail on the micro fisch or in my service manual about the 3 way fuel joint and where it connects. Fuel is moving but dumping all over from the stay right behind the petcock (towards the seat). Looks like I'm missing something, but can't see anything in the books that should go there. Any ideas? No one close by that I can take a look at to physically see what I'm having trouble with.

Sounds like fuel is dumping out the tank vent.  That vent line behind the petcock (toward the seat) as you say has a 3 way link in the middle of it but the hrizontal nipple is left open as a syphon break.

Now why its pouring out the vent could be as simple as it being over filled

I have had my vent line on my 97 a part many times and don't remember a three way joint there.

[MP]

Trying to put a 2000 interstate back together that I bought from salvage. Down to trying to start it and I can't find any detail on the micro fisch or in my service manual about the 3 way fuel joint and where it connects. Fuel is moving but dumping all over from the stay right behind the petcock (towards the seat). Looks like I'm missing something, but can't see anything in the books that should go there. Any ideas? No one close by that I can take a look at to physically see what I'm having trouble with.

Sounds like fuel is dumping out the tank vent.  That vent line behind the petcock (toward the seat) as you say has a 3 way link in the middle of it but the hrizontal nipple is left open as a syphon break.

Now why its pouring out the vent could be as simple as it being over filled

I have had my vent line on my 97 a part many times and don't remember a three way joint there.

Yeah, down lower, only a few inches above the bottom of the vent hose.

MP

[pjoy47]

Thanks for the responses. I did a little detective work as far in as I can see betweent he carbs. Took a picture of the 3 way vale I'm talking about. It's on the drivers right hand side between the two carbs closest to the seat. (2 & 4?). So this is supposed to be open with no hose on it? The leaking gas seems to be coming form the two hoses that are attached to the stay. Those are the vents I believe. So if that is correct, the carb needle valves may not be seating and/or they are overflowing? (BTW, I have no idea how to post a picture here)

[salty1]

Sure sounds from the post above you've got a float needle(s) sticking. You might want to fill the float chamber(s) with Seafoam or the like for 24hrs or so. Add it via the fuel ine and make sure it's getting there by opening the bowl drains. FWIW. If it were my bike I would remove the carbs and clean them the hard way.

[Thunderbolt]

Stuck float would be my guess.  You might be able to dislodge it by tapping on the bowls, but you most likely will need to remove the carb bank to clean everything up and get all the junk removed.

[Ricky-D]

Or, just remove the bowl from the offending carburetor

to clean the parts!

***

[Brian]

Trying to put a 2000 interstate back together that I bought from salvage. Down to trying to start it and I can't find any detail on the micro fisch or in my service manual about the 3 way fuel joint and where it connects. Fuel is moving but dumping all over from the stay right behind the petcock (towards the seat). Looks like I'm missing something, but can't see anything in the books that should go there. Any ideas? No one close by that I can take a look at to physically see what I'm having trouble with.

Sounds like fuel is dumping out the tank vent.  That vent line behind the petcock (toward the seat) as you say has a 3 way link in the middle of it but the hrizontal nipple is left open as a syphon break.

Now why its pouring out the vent could be as simple as it being over filled

I have had my vent line on my 97 a part many times and don't remember a three way joint there.

Yeah, down lower, only a few inches above the bottom of the vent hose.

MP

I will go looking for it this week.

[Brian]

Or, just remove the bowl from the offending carburetor

to clean the parts!

***

Ricky-D, How would one go about finding exactly what carb it is? Would one expect to see the gas running thru the carb into the intake tube side to start a hydrolock situation? I ask this because I have checked mine with the intakes removed leaving gas on to the carbs when I had indications of gas on the ends of the bowl vent tubes. Years ago I had  few bad float valves, caught the gas running straight thru the offending carbs. I just got done doing a complete carb overhaul using the redeye kits to replace all the O-rings due to fuel rail leaks. No more gas drips.

[Ricky-D]

Naturally,  identifying exactly where the leak originates is paramount.

I'm sure you are more capable than I since I don't have the problem.

***

[Denny47]

pjoy47, if you would post your location with your profile, there is a good chance that someone here is close to you and would more than likely give you some help.

[Brian]

Naturally,  identifying exactly where the leak originates is paramount.

I'm sure you are more capable than I since I don't have the problem.

***

Some folks have good luck, I am not one of them. There two other Valkyrie riders in our club who have over 100K on their scooters and have never had the carbs off their bikes for any reason. Although one wore out his rear splines and the other has had multiple wrecks.

[pjoy47]

I'm located in Stratford, CT. Anyone nearby can give me a call if you have some thoughts: 203-895-9427. Put the bike on the lift to flatten the carb angle. First, trying the easy way by removing the drain screw and spraying Seafoam in there. Pretty sure its the #2 or #4 carb as I clamped each of the gas lines and it nearly stopped by these two.

[AZdougness]

If it was a stuck float valve I would recommend taking a week getting to know your carbs. I just went through this same process after a fuel leak was coming from the carb vent lines, while only one float was the culprit, there were several that were not smoothly operating.

Consider also that if you don't get the correct float and you end up hydrolocking the bike, it requires splitting the engine case. Versus overhauling the carb bank which can be a same day job with the right tools and organization.

Food Fuel for thought.

[Brian]

I'm located in Stratford, CT. Anyone nearby can give me a call if you have some thoughts: 203-895-9427. Put the bike on the lift to flatten the carb angle. First, trying the easy way by removing the drain screw and spraying Seafoam in there. Pretty sure its the #2 or #4 carb as I clamped each of the gas lines and it nearly stopped by these two.

Seafoam needs to run through with the gas. You may as well just drop the bowls as going in this way may not work. I am confused about you clamping off the lines. Gas supply is common to all the carbs on each side. I agree with AZ. You need to get a manual and plan to spend some time getting to know these carbs. Take pictures of the carbs linkages and orientation of the carbs. I recommend taking the carbs a part individually and number them. They are not hard to rebuild as long as you organize a dedicated clean work area. 

[pjoy47]

Pulled it all apart. Just got to the point of removing the carbs and found a huge hole in the bottom side of the fuel line on the left side. replaced it and once the carbs got filled with gas... it runs and doesn't leak! Thanks for all the help.

[salty1]

Pulled it all apart. Just got to the point of removing the carbs and found a huge hole in the bottom side of the fuel line on the left side. replaced it and once the carbs got filled with gas... it runs and doesn't leak! Thanks for all the help.

Any ideas what may have caused the fuel line hole?      

[custom1]

MMMMM, Rubber Good.

Yea, It's a slow day at work.